s1 = input("Введите набор скобок: ") .replace(" ", "")
s = ''
for a in s1:
    if a == "(" or a == ")" or a == "[" or a == "]" or a == "{" or a == "}" or a == "<" or a == ">":
        s += a
while "()" in s or "{}" in s or "[]" in s or "<>" in s:
    s = s.replace("()", "")
    s = s.replace("{}", "")
    s = s.replace("[]", "")
    s = s.replace("<>", "")
if s:
    print(False)
else:
    print(True)
